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CVE

CVE-2026-25534

Spinnaker clouddriver and orca URL validation bypass via underscores in hostnames
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CVE

CVE-2026-25534

Spinnaker clouddriver and orca URL validation bypass via underscores in hostnames

Impact

Spinnaker updated URL Validation logic on user input to provide sanitation on user inputted URLs for clouddriver.  However, they missed that Java URL objects do not correctly handle underscores on parsing.  This led to a bypass of the previous CVE (CVE-2025-61916) through the use of carefully crafted URLs.  Note, Spinnaker found this not just in that CVE, but in the existing URL validations in Orca fromUrl expression handling.  This CVE impacts BOTH artifacts as a result.   

Patches

This has been merged and will be available in versions 2025.4.1, 2025.3.1, 2025.2.4 and 2026.0.0.  

Workarounds

You can disable the various artifacts on this system to work around these limits.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
-
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
C
H
U
-

Related Resources

No items found.

References

https://github.com/spinnaker/spinnaker/security/advisories/GHSA-8r8j-gfhg-fw38, https://github.com/spinnaker/spinnaker/security/advisories/GHSA-vrjc-q2fh-6x9h, https://github.com/spinnaker/spinnaker/commit/7c4737906239a958a468e843239c6785b03d0eda, https://github.com/spinnaker/spinnaker

Severity

9.1

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
9.1
EPSS Probability
0%
EPSS Percentile
0%
Introduced Version
0,2025.3.0,2025.4.0
Fix Available
2025.2.4,2025.3.1,2025.4.1

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